PS1 File Extension

PS1 file icon
Windows PowerShell Cmdlet Format
  • Developer
  • Popularity
    3.2 (4 votes)

What is PS1 file?

PS1 is a file extension commonly associated with Windows PowerShell Cmdlet Format files. Windows PowerShell Cmdlet Format specification was created by Microsoft. PS1 files are supported by software applications available for devices running Windows. Files with PS1 extension are categorized as Executable Files files. The Executable Files subset comprises 134 various file formats. Users are advised to use Microsoft Windows PowerShell software for managing PS1 files, although 1 other programs can also handle this type of file.

Programs which support PS1 file extension

Programs that can handle PS1 files are as follows. Files with PS1 extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

Programs that support PS1 file

How to open file with PS1 extension?

Being unable to open files with PS1 extension can be have various origins. Fortunately, most common problems with PS1 files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with PS1 files.

Step 1. Download and install Microsoft Windows PowerShell

Problems with opening and working with PS1 files are most probably having to do with no proper software compatible with PS1 files being present on your machine. This one is an easy one. Select Microsoft Windows PowerShell or one of the recommended programs (for example, Microsoft Windows) and download it from appropriate source and install on your system. Above you will find a complete listing of programs that support PS1 files, classified according to system platforms for which they are available. The safest method of downloading Microsoft Windows PowerShell installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Verify the you have the latest version of Microsoft Windows PowerShell

If the problems with opening PS1 files still occur even after installing Microsoft Windows PowerShell, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Microsoft Windows PowerShell is available. Software developers may implement support for more modern file formats in updated versions of their products. If you have an older version of Microsoft Windows PowerShell installed, it may not support PS1 format. The most recent version of Microsoft Windows PowerShell is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Set the default application to open PS1 files to Microsoft Windows PowerShell

If you have the latest version of Microsoft Windows PowerShell installed and the problem persists, select it as the default program to be used to manage PS1 on your device. The method is quite simple and varies little across operating systems.

Change the default application in Windows

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the PS1 file
  • Click Choose another app and then select More apps option
  • Finally select Look for another app on this PC, point to the folder where Microsoft Windows PowerShell is installed, check the Always use this app to open PS1 files box and conform your selection by clicking OK button

Change the default application in Mac OS

  • From the drop-down menu, accessed by clicking the file with PS1 extension, select Information
  • Open the Open with section by clicking its name
  • From the list choose the appropriate program and confirm by clicking Change for all....
  • Finally, a This change will be applied to all files with PS1 extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Check the PS1 for errors

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the PS1 file in question. Problems with opening the file may arise due to various reasons.

1. The PS1 may be infected with malware – make sure to scan it with an antivirus tool.

Should it happed that the PS1 is infected with a virus, this may be that cause that prevents you from accessing it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. PS1 file is infected with malware? Follow the steps suggested by your antivirus software.

2. Check whether the file is corrupted or damaged

If you obtained the problematic PS1 file from a third party, ask them to supply you with another copy. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. If the PS1 file has been downloaded from the internet only partially, try to redownload it.

3. Verify whether your account has administrative rights

Sometimes in order to access files user need to have administrative privileges. Log in using an administrative account and see If this solves the problem.

4. Make sure that the system has sufficient resources to run Microsoft Windows PowerShell

If the system is under havy load, it may not be able to handle the program that you use to open files with PS1 extension. In this case close the other applications.

5. Check if you have the latest updates to the operating system and drivers

Latest versions of programs and drivers may help you solve problems with Windows PowerShell Cmdlet Format files and ensure security of your device and operating system. It may be the case that the PS1 files work properly with updated software that addresses some system bugs.

Do you want to help?

If you have additional information about the PS1 file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on PS1 file.

Top File Extensions
Show more
File Extension of the day
htm icon


Hypertext Markup Language Format

HTM file contains markup code in Hypertext Markup Language format, and shares many similarities with HTML. This is a standard document file used fo...